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  • Title: [Study of the informative value of Holter ECG monitoring and exercise test in ventricular arrhythmia in patients with ischemic heart disease and a high degree of myocardial electric instability, based on the data of programmed electric stimulation of the heart ventricles].
    Author: Kaĭn IuL, Makhotina VN, Vaĭnu MK, Malviste MR, Kalde IuL.
    Journal: Kardiologiia; 1989 Mar; 29(3):13-7. PubMed ID: 2471873.
    Abstract:
    A total of 118 individuals were investigated to assess the value of Holter's ECG monitoring and bicycle ergometry for the identification of coronary patients predisposed to dangerous arrhythmias. Programmed ventricular stimulation was carried out: 1, 2 and 3 electric stimuli from the apex and/or outflow pathway of the right ventricle were applied in the presence of a pacemaker operating at 100 and 140 imp/min rates. The analysis of 24-hour ECG records demonstrated a correlation between some parameters (number of different ventricular extrasystole configurations, presence of high-grade ventricular arrhythmias) and the magnitude of myocardial electric instability, as shown by electric stimulation. An emergence or essential increase in ectopic ventricular activity during bicycle ergometry is not a precursor of myocardial instability at programmed pacemaker stimulation. At the same time, the absence of ventricular arrhythmias in response to stress does not exclude high-grade myocardial instability, detectable at programmed pacemaker stimulation.
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